[Bug 1056815] Re: 'Could not restore packages from the previous install' error message when installed from live usb

[Parameswaran Sivatharman]

This occurred during the following flow,

1. Install quantal desktop 
2. Boot live session using usb and start another installation from the live session
3. Go to the manual partitioner and install in an available partition
4. This occurs towards the end of the installation

** Attachment added: "apt-clone-state-ubuntu.tar.gz"
   https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1056815/+attachment/3351581/+files/apt-clone-state-ubuntu.tar.gz

** Changed in: ubiquity (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1056815

Title:
  'Could not restore packages from the previous install' error message
  when installed from live usb

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  The following occurred during an installation from live usb, with
  desktop 20120926. Observed in i386 as well as on amd64+mac

  Sep 26 12:12:06 ubuntu ubiquity:     self._restore_sources_list(statefile, targetdir)
  Sep 26 12:12:06 ubuntu ubiquity:   File "/usr/lib/python3/dist-packages/apt_clone.py", line 387, in _restore_sources_list
  Sep 26 12:12:06 ubuntu ubiquity:     tar.extract(self.TARPREFIX+"etc/apt/sources.list", targetdir)
  Sep 26 12:12:06 ubuntu ubiquity:   File "/usr/lib/python3.2/tarfile.py", line 2168, in extract
  Sep 26 12:12:06 ubuntu ubiquity:     tarinfo = self.getmember(member)
  Sep 26 12:12:06 ubuntu ubiquity:   File "/usr/lib/python3.2/tarfile.py", line 1886, in getmember
  Sep 26 12:12:06 ubuntu ubiquity:     raise KeyError("filename %r not found" % name)
  Sep 26 12:12:06 ubuntu ubiquity: KeyError: "filename './etc/apt/sources.list' not found"
  Sep 26 12:12:06 ubuntu plugininstall.py: log-output -t ubiquity chroot /target umount /sys
  Sep 26 12:12:06 ubuntu plugininstall.py: log-output -t ubiquity chroot /target umount /proc
  Sep 26 12:12:06 ubuntu plugininstall.py: log-output -t ubiquity umount /target/dev
  Sep 26 12:12:06 ubuntu plugininstall.py: log-output -t ubiquity umount -f /target/proc
  Sep 26 12:12:06 ubuntu plugininstall.py: log-output -t ubiquity umount -f /target/sys
  Sep 26 12:12:06 ubuntu plugininstall.py: log-output -t ubiquity umount -f /target/dev
  Sep 26 12:12:06 ubuntu plugininstall.py: log-output -t ubiquity umount -f /target/run
  Sep 26 12:12:06 ubuntu plugininstall.py: Could not restore packages from the previous install:
  Sep 26 12:12:06 ubuntu plugininstall.py: Traceback (most recent call last):
  Sep 26 12:12:06 ubuntu plugininstall.py:   File "/usr/share/ubiquity/plugininstall.py", line 248, in run
  Sep 26 12:12:06 ubuntu plugininstall.py:     self.apt_clone_restore()
  Sep 26 12:12:06 ubuntu plugininstall.py:   File "/usr/share/ubiquity/plugininstall.py", line 1494, in apt_clone_restore
  Sep 26 12:12:06 ubuntu plugininstall.py:     preexec_fn=install_misc.debconf_disconnect)
  Sep 26 12:12:06 ubuntu plugininstall.py:   File "/usr/lib/python3.2/subprocess.py", line 489, in check_call
  Sep 26 12:12:06 ubuntu plugininstall.py:     raise CalledProcessError(retcode, cmd)
  Sep 26 12:12:06 ubuntu plugininstall.py: subprocess.CalledProcessError: Command '['apt-clone', 'restore-new-distro', '/target/ubiquity-apt-clone/apt-clone-state-ubuntu.tar.gz', 'quantal', '--destination', '/target']' returned non-zero exit status 1
  Sep 26 12:12:06 ubuntu plugininstall.py:

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: ubiquity 2.12.5
  ProcVersionSignature: Ubuntu 3.5.0-15.23-generic 3.5.4
  Uname: Linux 3.5.0-15-generic i686
  ApportVersion: 2.5.2-0ubuntu4
  Architecture: i386
  CasperVersion: 1.324
  Date: Wed Sep 26 13:17:03 2012
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  LiveMediaBuild: Ubuntu 12.10 "Quantal Quetzal" - Beta i386 (20120926)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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